Gravitational Waves: Echo of a Cosmic Rebound
The standard cosmological model describes the birth of the universe as an explosion from a singularity — a point of infinite density and spacetime curvature.
Cosmic Dust: The Ashes of Stars Silencing the Big Bang Echo
Astronomers are trying to capture the radio echo of the Big Bang — a faint glow that fills the entire universe. But the receiver is choking with noise: our Galaxy is packed with glowing interstellar dust, whose emission can easily be mistaken for a signal from the distant past.